<?php
/**
 * A class for reading Microsoft Excel (97/2003) Spreadsheets.
 *
 * Version 2.22
 *
 * Enhanced and maintained by Alex Frenkel < excell2@frenkel-online.com >
 * Maintained at http://code.google.com/p/php-excel-reader2/
 *
 * Previosly mantained by Matt Kruse < http://mattkruse.com >
 * Maintained at http://code.google.com/p/php-excel-reader/
 *
 * Format parsing and MUCH more contributed by:
 *    Matt Roxburgh < http://www.roxburgh.me.uk >
 *
 * DOCUMENTATION
 * =============
 *   http://code.google.com/p/php-excel-reader2/wiki/Documentation
 *
 * CHANGE LOG
 * ==========
 *   http://code.google.com/p/php-excel-reader2/wiki/ChangeHistory
 *
 *
 * --------------------------------------------------------------------------
 *
 * Originally developed by Vadim Tkachenko under the name PHPExcelReader.
 * (http://sourceforge.net/projects/phpexcelreader)
 * Based on the Java version by Andy Khan (http://www.andykhan.com).  Now
 * maintained by David Sanders.  Reads only Biff 7 and Biff 8 formats.
 *
 * PHP versions 4 and 5
 *
 * LICENSE: This source file is subject to version 3.0 of the PHP license
 * that is available through the world-wide-web at the following URI:
 * http://www.php.net/license/3_0.txt.  If you did not receive a copy of
 * the PHP License and are unable to obtain it through the web, please
 * send a note to license@php.net so we can mail you a copy immediately.
 *
 * @category   Spreadsheet
 * @package	Spreadsheet_Excel_Reader
 * @author	 Vadim Tkachenko <vt@apachephp.com>
 * @license	http://www.php.net/license/3_0.txt  PHP License 3.0
 * @version	CVS: $Id: reader.php 19 2007-03-13 12:42:41Z shangxiao $
 * @link	   http://pear.php.net/package/Spreadsheet_Excel_Reader
 * @see		OLE, Spreadsheet_Excel_Writer
 * --------------------------------------------------------------------------
 */
/**
 * 
 * Edit By KAHT
 */
define('NUM_BIG_BLOCK_DEPOT_BLOCKS_POS', 0x2c);
define('SMALL_BLOCK_DEPOT_BLOCK_POS', 0x3c);
define('ROOT_START_BLOCK_POS', 0x30);
define('BIG_BLOCK_SIZE', 0x200);
define('SMALL_BLOCK_SIZE', 0x40);
define('EXTENSION_BLOCK_POS', 0x44);
define('NUM_EXTENSION_BLOCK_POS', 0x48);
define('PROPERTY_STORAGE_BLOCK_SIZE', 0x80);
define('BIG_BLOCK_DEPOT_BLOCKS_POS', 0x4c);
define('SMALL_BLOCK_THRESHOLD', 0x1000);
// property storage offsets
define('SIZE_OF_NAME_POS', 0x40);
define('TYPE_POS', 0x42);
define('START_BLOCK_POS', 0x74);
define('SIZE_POS', 0x78);
define('IDENTIFIER_OLE', pack("CCCCCCCC",0xd0,0xcf,0x11,0xe0,0xa1,0xb1,0x1a,0xe1));

function GetInt4d($data, $pos)
{
	$value = ord($data[$pos]) | (ord($data[$pos+1])	<< 8) | (ord($data[$pos+2]) << 16) | (ord($data[$pos+3]) << 24);
	if ($value>=4294967294)
	{
		$value=-2;
	}
	return $value;
}

// http://uk.php.net/manual/en/function.getdate.php
function gmgetdate($ts = null)
{
	$k = array ('mday', 'mon', 'year');
	return (array_comb ( $k, explode ( ":", gmdate ( 'j:n:Y', is_null ( $ts ) ? time () : $ts ) ) ));
}

// Added for PHP4 compatibility
function array_comb($array1, $array2)
{
	$out = array();
	foreach ($array1 as $key => $value) {
		$out[$value] = $array2[$key];
	}
	return $out;
}

function v($data,$pos)
{
	return ord($data[$pos]) | ord($data[$pos+1])<<8;
}

class OLERead
{
	var $data = '';
	function OLERead(){	}

	function read($sFileName){
		// check if file exist and is readable (Darko Miljanovic)
		if(!is_readable($sFileName)) {
			$this->error = 1;
			return false;
		}
		$this->data = @file_get_contents($sFileName);
		if (!$this->data) {
			$this->error = 1;
			return false;
		}
		if (substr($this->data, 0, 8) != IDENTIFIER_OLE) {
			$this->error = 1;
			return false;
		}
		$this->numBigBlockDepotBlocks = GetInt4d($this->data, NUM_BIG_BLOCK_DEPOT_BLOCKS_POS);
		$this->sbdStartBlock = GetInt4d($this->data, SMALL_BLOCK_DEPOT_BLOCK_POS);
		$this->rootStartBlock = GetInt4d($this->data, ROOT_START_BLOCK_POS);
		$this->extensionBlock = GetInt4d($this->data, EXTENSION_BLOCK_POS);
		$this->numExtensionBlocks = GetInt4d($this->data, NUM_EXTENSION_BLOCK_POS);

		$bigBlockDepotBlocks = array();
		$pos = BIG_BLOCK_DEPOT_BLOCKS_POS;
		$bbdBlocks = $this->numBigBlockDepotBlocks;
		if ($this->numExtensionBlocks != 0) {
			$bbdBlocks = (BIG_BLOCK_SIZE - BIG_BLOCK_DEPOT_BLOCKS_POS)/4;
		}

		for ($i = 0; $i < $bbdBlocks; $i++) {
			$bigBlockDepotBlocks[$i] = GetInt4d($this->data, $pos);
			$pos += 4;
		}


		for ($j = 0; $j < $this->numExtensionBlocks; $j++) {
			$pos = ($this->extensionBlock + 1) * BIG_BLOCK_SIZE;
			$blocksToRead = min($this->numBigBlockDepotBlocks - $bbdBlocks, BIG_BLOCK_SIZE / 4 - 1);

			for ($i = $bbdBlocks; $i < $bbdBlocks + $blocksToRead; $i++) {
				$bigBlockDepotBlocks[$i] = GetInt4d($this->data, $pos);
				$pos += 4;
			}

			$bbdBlocks += $blocksToRead;
			if ($bbdBlocks < $this->numBigBlockDepotBlocks) {
				$this->extensionBlock = GetInt4d($this->data, $pos);
			}
		}

		// readBigBlockDepot
		$pos = 0;
		$index = 0;
		$this->bigBlockChain = array();

		for ($i = 0; $i < $this->numBigBlockDepotBlocks; $i++) {
			$pos = ($bigBlockDepotBlocks[$i] + 1) * BIG_BLOCK_SIZE;
			//echo "pos = $pos";
			for ($j = 0 ; $j < BIG_BLOCK_SIZE / 4; $j++) {
				$this->bigBlockChain[$index] = GetInt4d($this->data, $pos);
				$pos += 4 ;
				$index++;
			}
		}

		// readSmallBlockDepot();
		$pos = 0;
		$index = 0;
		$sbdBlock = $this->sbdStartBlock;
		$this->smallBlockChain = array();

		while ($sbdBlock != -2) {
			$pos = ($sbdBlock + 1) * BIG_BLOCK_SIZE;
			for ($j = 0; $j < BIG_BLOCK_SIZE / 4; $j++) {
				$this->smallBlockChain[$index] = GetInt4d($this->data, $pos);
				$pos += 4;
				$index++;
			}
			$sbdBlock = $this->bigBlockChain[$sbdBlock];
		}


		// readData(rootStartBlock)
		$block = $this->rootStartBlock;
		$pos = 0;
		$this->entry = $this->__readData($block);
		$this->__readPropertySets();
	}

	function __readData($bl) {
		$block = $bl;
		$pos = 0;
		$data = '';
		while ($block != -2)  {
			$pos = ($block + 1) * BIG_BLOCK_SIZE;
			$data = $data.substr($this->data, $pos, BIG_BLOCK_SIZE);
			$block = $this->bigBlockChain[$block];
		}
		return $data;
	}

	function __readPropertySets(){
		$offset = 0;
		while ($offset < strlen($this->entry)) {
			$d = substr($this->entry, $offset, PROPERTY_STORAGE_BLOCK_SIZE);
			$nameSize = ord($d[SIZE_OF_NAME_POS]) | (ord($d[SIZE_OF_NAME_POS+1]) << 8);
			$type = ord($d[TYPE_POS]);
			$startBlock = GetInt4d($d, START_BLOCK_POS);
			$size = GetInt4d($d, SIZE_POS);
			$name = '';
			for ($i = 0; $i < $nameSize ; $i++) {
				$name .= $d[$i];
			}
			$name = str_replace("\x00", "", $name);
			$this->props[] = array (
				'name' => $name,
				'type' => $type,
				'startBlock' => $startBlock,
				'size' => $size);
			if ((strtolower($name) == "workbook") || ( strtolower($name) == "book")) {
				$this->wrkbook = count($this->props) - 1;
			}
			if ($name == "Root Entry") {
				$this->rootentry = count($this->props) - 1;
			}
			$offset += PROPERTY_STORAGE_BLOCK_SIZE;
		}

	}

	function getWorkBook(){
		if ($this->props[$this->wrkbook]['size'] < SMALL_BLOCK_THRESHOLD){
			$rootdata = $this->__readData($this->props[$this->rootentry]['startBlock']);
			$streamData = '';
			$block = $this->props[$this->wrkbook]['startBlock'];
			$pos = 0;
			while ($block != -2) {
				$pos = $block * SMALL_BLOCK_SIZE;
				$streamData .= substr($rootdata, $pos, SMALL_BLOCK_SIZE);
				$block = $this->smallBlockChain[$block];
			}
			return $streamData;
		}else{
			$numBlocks = $this->props[$this->wrkbook]['size'] / BIG_BLOCK_SIZE;
			if ($this->props[$this->wrkbook]['size'] % BIG_BLOCK_SIZE != 0) {
				$numBlocks++;
			}

			if ($numBlocks == 0) return '';
			$streamData = '';
			$block = $this->props[$this->wrkbook]['startBlock'];
			$pos = 0;
			while ($block != -2) {
				$pos = ($block + 1) * BIG_BLOCK_SIZE;
				$streamData .= substr($this->data, $pos, BIG_BLOCK_SIZE);
				$block = $this->bigBlockChain[$block];
			}
			return $streamData;
		}
	}

}

define('SPREADSHEET_EXCEL_READER_BIFF8',			 0x600);
define('SPREADSHEET_EXCEL_READER_BIFF7',			 0x500);
define('SPREADSHEET_EXCEL_READER_WORKBOOKGLOBALS',   0x5);
define('SPREADSHEET_EXCEL_READER_WORKSHEET',		 0x10);
define('SPREADSHEET_EXCEL_READER_TYPE_BOF',		  0x809);
define('SPREADSHEET_EXCEL_READER_TYPE_EOF',		  0x0a);
define('SPREADSHEET_EXCEL_READER_TYPE_BOUNDSHEET',   0x85);
define('SPREADSHEET_EXCEL_READER_TYPE_DIMENSION',	0x200);
define('SPREADSHEET_EXCEL_READER_TYPE_ROW',		  0x208);
define('SPREADSHEET_EXCEL_READER_TYPE_DBCELL',	   0xd7);
define('SPREADSHEET_EXCEL_READER_TYPE_FILEPASS',	 0x2f);
define('SPREADSHEET_EXCEL_READER_TYPE_NOTE',		 0x1c);
define('SPREADSHEET_EXCEL_READER_TYPE_TXO',		  0x1b6);
define('SPREADSHEET_EXCEL_READER_TYPE_RK',		   0x7e);
define('SPREADSHEET_EXCEL_READER_TYPE_RK2',		  0x27e);
define('SPREADSHEET_EXCEL_READER_TYPE_MULRK',		0xbd);
define('SPREADSHEET_EXCEL_READER_TYPE_MULBLANK',	 0xbe);
define('SPREADSHEET_EXCEL_READER_TYPE_INDEX',		0x20b);
define('SPREADSHEET_EXCEL_READER_TYPE_SST',		  0xfc);
define('SPREADSHEET_EXCEL_READER_TYPE_EXTSST',	   0xff);
define('SPREADSHEET_EXCEL_READER_TYPE_CONTINUE',	 0x3c);
define('SPREADSHEET_EXCEL_READER_TYPE_LABEL',		0x204);
define('SPREADSHEET_EXCEL_READER_TYPE_LABELSST',	 0xfd);
define('SPREADSHEET_EXCEL_READER_TYPE_NUMBER',	   0x203);
define('SPREADSHEET_EXCEL_READER_TYPE_NAME',		 0x18);
define('SPREADSHEET_EXCEL_READER_TYPE_ARRAY',		0x221);
define('SPREADSHEET_EXCEL_READER_TYPE_STRING',	   0x207);
define('SPREADSHEET_EXCEL_READER_TYPE_FORMULA',	  0x406);
define('SPREADSHEET_EXCEL_READER_TYPE_FORMULA2',	 0x6);
define('SPREADSHEET_EXCEL_READER_TYPE_FORMAT',	   0x41e);
define('SPREADSHEET_EXCEL_READER_TYPE_XF',		   0xe0);
define('SPREADSHEET_EXCEL_READER_TYPE_BOOLERR',	  0x205);
define('SPREADSHEET_EXCEL_READER_TYPE_FONT',	  0x0031);
define('SPREADSHEET_EXCEL_READER_TYPE_PALETTE',	  0x0092);
define('SPREADSHEET_EXCEL_READER_TYPE_UNKNOWN',	  0xffff);
define('SPREADSHEET_EXCEL_READER_TYPE_NINETEENFOUR', 0x22);
define('SPREADSHEET_EXCEL_READER_TYPE_MERGEDCELLS',  0xE5);
define('SPREADSHEET_EXCEL_READER_UTCOFFSETDAYS' ,	25569);
define('SPREADSHEET_EXCEL_READER_UTCOFFSETDAYS1904', 24107);
define('SPREADSHEET_EXCEL_READER_MSINADAY',		  86400);
define('SPREADSHEET_EXCEL_READER_TYPE_HYPER',	     0x01b8);
define('SPREADSHEET_EXCEL_READER_TYPE_COLINFO',	     0x7d);
define('SPREADSHEET_EXCEL_READER_TYPE_DEFCOLWIDTH',  0x55);
define('SPREADSHEET_EXCEL_READER_TYPE_STANDARDWIDTH', 0x99);
define('SPREADSHEET_EXCEL_READER_DEF_NUM_FORMAT',	"%s");
/*
 * Main Class
 */
class Spreadsheet_Excel_Reader
{

	// MK: Added to make data retrieval easier
	var $colnames = array();
	var $colindexes = array();

	function myHex($d) {
		if ($d < 16) return "0" . dechex($d);
		return dechex($d);
	}

	function dumpHexData($data, $pos, $length) {
		$info = "";
		for ($i = 0; $i <= $length; $i++) {
			$info .= ($i==0?"":" ") . $this->myHex(ord($data[$pos + $i])) . (ord($data[$pos + $i])>31? "[" . $data[$pos + $i] . "]":'');
		}
		return $info;
	}

	function getCol($col) {
		if (is_string($col)) {
			$col = strtolower($col);
			if (array_key_exists($col,$this->colnames)) {
				$col = $this->colnames[$col];
			}
		}
		return $col;
	}

	// PUBLIC API FUNCTIONS
	// --------------------

	function val($row,$col,$sheet=0) {
		$col = $this->getCol($col);
		if (array_key_exists($row,$this->sheets[$sheet]['cells']) && array_key_exists($col,$this->sheets[$sheet]['cells'][$row])) {
			$this->sheets[$sheet]['cells'][$row][$col];
			return $this->sheets[$sheet]['cells'][$row][$col];
		}
		return "";
	}

	function value($row,$col,$sheet=0) {
		return $this->val($row,$col,$sheet);
	}

	function info($row,$col,$type='',$sheet=0) {
		$col = $this->getCol($col);
		if (array_key_exists('cellsInfo',$this->sheets[$sheet])
		&& array_key_exists($row,$this->sheets[$sheet]['cellsInfo'])
		&& array_key_exists($col,$this->sheets[$sheet]['cellsInfo'][$row])
		&& array_key_exists($type,$this->sheets[$sheet]['cellsInfo'][$row][$col])) {
			return $this->sheets[$sheet]['cellsInfo'][$row][$col][$type];
		}
		return "";
	}

	function type($row,$col,$sheet=0) {
		return $this->info($row,$col,'type',$sheet);
	}

	function raw($row,$col,$sheet=0) {
		return $this->info($row,$col,'raw',$sheet);
	}

	function rowcount($sheet=0) {
		return $this->sheets[$sheet]['numRows'];
	}

	function colcount($sheet=0) {
		return $this->sheets[$sheet]['numCols'];
	}

	// FORMAT PROPERTIES
	// =================
	function format($row,$col,$sheet=0) {
		return $this->info($row,$col,'format',$sheet);
	}

	function formatIndex($row,$col,$sheet=0) {
		return $this->info($row,$col,'formatIndex',$sheet);
	}

	// DUMP AN HTML TABLE OF THE ENTIRE XLS DATA
	// =========================================
	function dump($row_numbers=false,$col_letters=false,$sheet=0) {
		$record = array();
		for($row=2;$row<=$this->rowcount($sheet);$row++)
		{
			for($col=1;$col<=$this->colcount($sheet);$col++)
			{
				$val = $this->val($row,$col,$sheet);

					$record[$row][$col]=$val;
				
			}
		}
		return $record;
	}

	// --------------
	// END PUBLIC API

	var $boundsheets = array();
	var $formatRecords = array();
	var $xfRecords = array();
	var $colInfo = array();
	var $rowInfo = array();

	var $sst = array();
	var $sheets = array();

	var $data;
	var $_ole;
	var $_defaultEncoding = "UTF-8";
	var $_defaultFormat = SPREADSHEET_EXCEL_READER_DEF_NUM_FORMAT;
	var $_columnsFormat = array();
	var $_rowoffset = 1;
	var $_coloffset = 1;

	/**
	 * List of default date formats used by Excel
	 */
	var $dateFormats = array (
	0xe => "m/d/Y",
	0xf => "M-d-Y",
	0x16 => "Y/m/d",
	);


	/**
	 * Default number formats used by Excel
	 */
	var $numberFormats = array(
	0x1 => "0",
	);

	function read16bitstring($data, $start) {
		$len = 0;
		while (ord($data[$start + $len]) + ord($data[$start + $len + 1]) > 0) $len++;
		return substr($data, $start, $len);
	}

	// ADDED by Matt Kruse for better formatting
	function _format_value($format,$num) {
		// 49==TEXT format
		// http://code.google.com/p/php-excel-reader/issues/detail?id=7
		if ( ($format=="%s") || ($format=="GENERAL") ) {
			return array('string'=>$num);
		}

		// Custom pattern can be POSITIVE;NEGATIVE;ZERO
		// The "text" option as 4th parameter is not handled
		$parts = explode(";",$format);
		$pattern = $parts[0];
		// Negative pattern
		if (count($parts)>2 && $num==0) {
			$pattern = $parts[2];
		}
		// Zero pattern
		if (count($parts)>1 && $num<0) {
			$pattern = $parts[1];
			$num = abs($num);
		}

		$color = "";
		$matches = array();
		// In Excel formats, "_" is used to add spacing, which we can't do in HTML
		$pattern = preg_replace("/_./","",$pattern);

		// Some non-number characters are escaped with \, which we don't need
		$pattern = preg_replace("/\\\/","",$pattern);

		// Some non-number strings are quoted, so we'll get rid of the quotes
		$pattern = preg_replace("/\"/","",$pattern);

		// TEMPORARY - Convert # to 0
		$pattern = preg_replace("/\#/","0",$pattern);

		// Find out if we need comma formatting
		$has_commas = preg_match("/,/",$pattern);
		if ($has_commas) {
			$pattern = preg_replace("/,/","",$pattern);
		}

		// Handle Percentages
		if (preg_match("/\d(\%)([^\%]|$)/",$pattern,$matches)) {
			$num = $num * 100;
			$pattern = preg_replace("/(\d)(\%)([^\%]|$)/","$1%$3",$pattern);
		}

		// Handle the number itself
		$number_regex = "/(\d+)(\.?)(\d*)/";
		if (preg_match($number_regex,$pattern,$matches)) {
			$left = $matches[1];
			$dec = $matches[2];
			$right = $matches[3];
			if ($has_commas) {
				$formatted = number_format($num,strlen($right));
			}
			else {
				$sprintf_pattern = "%1.".strlen($right)."f";
				$formatted = sprintf($sprintf_pattern, $num);
			}
			$pattern = preg_replace($number_regex, $formatted, $pattern);
		}

		return array(
			'string'=>$pattern,
			'formatColor'=>$color
		);
	}

	/**
	 * Constructor
	 *
	 * Some basic initialisation
	 */
	function Spreadsheet_Excel_Reader($file='',$store_extended_info=true,$outputEncoding='') {
		$this->_ole = new OLERead();
		$this->setUTFEncoder('mb');
		if ($outputEncoding != '') {
			$this->setOutputEncoding($outputEncoding);
		}
		$this->store_extended_info = $store_extended_info;
		if ($file!="") {
			$this->read($file);
		}

	}

	/**
	 * Set the encoding method
	 */
	function setOutputEncoding($encoding) {
		$this->_defaultEncoding = $encoding;
	}

	/**
	 *  $encoder = 'iconv' or 'mb'
	 *  set iconv if you would like use 'iconv' for encode UTF-16LE to your encoding
	 *  set mb if you would like use 'mb_convert_encoding' for encode UTF-16LE to your encoding
	 */
	function setUTFEncoder($encoder = 'iconv') {
		$this->_encoderFunction = '';
		if ($encoder == 'iconv') {
			$this->_encoderFunction = function_exists('iconv') ? 'iconv' : '';
		} elseif ($encoder == 'mb') {
			$this->_encoderFunction = function_exists('mb_convert_encoding') ? 'mb_convert_encoding' : '';
		}
	}

	function setRowColOffset($iOffset) {
		$this->_rowoffset = $iOffset;
		$this->_coloffset = $iOffset;
	}

	/**
	 * Set the default number format
	 */
	function setDefaultFormat($sFormat) {
		$this->_defaultFormat = $sFormat;
	}

	/**
	 * Force a column to use a certain format
	 */
	function setColumnFormat($column, $sFormat) {
		$this->_columnsFormat[$column] = $sFormat;
	}

	/**
	 * Read the spreadsheet file using OLE, then parse
	 */
	function read($sFileName) {
		$res = $this->_ole->read($sFileName);
		// oops, something goes wrong (Darko Miljanovic)
		if($res === false) {
			// check error code
			if($this->_ole->error == 1) {
				// bad file
				die('The filename ' . $sFileName . ' is not readable');
			}
			// check other error codes here (eg bad fileformat, etc...)
		}
		$this->data = $this->_ole->getWorkBook();
		$this->_parse();
	}

	/**
	 * Parse a workbook
	 *
	 * @access private
	 * @return bool
	 */
	function _parse() {
	$pos = 0;
		$data = $this->data;
		$code = v ( $data, $pos );
		$length = v ( $data, $pos + 2 );
		$version = v ( $data, $pos + 4 );
		$substreamType = v ( $data, $pos + 6 );
		
		$this->version = $version;
		
		if (($version != SPREADSHEET_EXCEL_READER_BIFF8) && ($version != SPREADSHEET_EXCEL_READER_BIFF7)) {
			return false;
		}
		
		if ($substreamType != SPREADSHEET_EXCEL_READER_WORKBOOKGLOBALS) {
			return false;
		}
		
		$pos += $length + 4;
		
		$code = v ( $data, $pos );
		$length = v ( $data, $pos + 2 );
		
		while ( $code != SPREADSHEET_EXCEL_READER_TYPE_EOF ) {
			switch ($code) {
				case SPREADSHEET_EXCEL_READER_TYPE_SST :
					$spos = $pos + 4;
					$limitpos = $spos + $length;
					$uniqueStrings = $this->_GetInt4d ( $data, $spos + 4 );
					$spos += 8;
					for($i = 0; $i < $uniqueStrings; $i ++) {
						// Read in the number of characters
						if ($spos == $limitpos) {
							$opcode = v ( $data, $spos );
							$conlength = v ( $data, $spos + 2 );
							if ($opcode != 0x3c) {
								return - 1;
							}
							$spos += 4;
							$limitpos = $spos + $conlength;
						}
						$numChars = ord ( $data [$spos] ) | (ord ( $data [$spos + 1] ) << 8);
						$spos += 2;
						$optionFlags = ord ( $data [$spos] );
						$spos ++;
						$asciiEncoding = (($optionFlags & 0x01) == 0);
						$extendedString = (($optionFlags & 0x04) != 0);
						
						// See if string contains formatting information
						$richString = (($optionFlags & 0x08) != 0);
						
						if ($richString) {
							// Read in the crun
							$formattingRuns = v ( $data, $spos );
							$spos += 2;
						}
						
						if ($extendedString) {
							// Read in cchExtRst
							$extendedRunLength = $this->_GetInt4d ( $data, $spos );
							$spos += 4;
						}
						
						$len = ($asciiEncoding) ? $numChars : $numChars * 2;
						if ($spos + $len < $limitpos) {
							$retstr = substr ( $data, $spos, $len );
							$spos += $len;
						} else {
							// found countinue
							$retstr = substr ( $data, $spos, $limitpos - $spos );
							$bytesRead = $limitpos - $spos;
							$charsLeft = $numChars - (($asciiEncoding) ? $bytesRead : ($bytesRead / 2));
							$spos = $limitpos;
							
							while ( $charsLeft > 0 ) {
								$opcode = v ( $data, $spos );
								$conlength = v ( $data, $spos + 2 );
								if ($opcode != 0x3c) {
									return - 1;
								}
								$spos += 4;
								$limitpos = $spos + $conlength;
								$option = ord ( $data [$spos] );
								$spos += 1;
								if ($asciiEncoding && ($option == 0)) {
									$len = min ( $charsLeft, $limitpos - $spos ); // min($charsLeft, $conlength);
									$retstr .= substr ( $data, $spos, $len );
									$charsLeft -= $len;
									$asciiEncoding = true;
								} elseif (! $asciiEncoding && ($option != 0)) {
									$len = min ( $charsLeft * 2, $limitpos - $spos ); // min($charsLeft, $conlength);
									$retstr .= substr ( $data, $spos, $len );
									$charsLeft -= $len / 2;
									$asciiEncoding = false;
								} elseif (! $asciiEncoding && ($option == 0)) {
									// Bummer - the string starts off as Unicode, but after the
									// continuation it is in straightforward ASCII encoding
									$len = min ( $charsLeft, $limitpos - $spos ); // min($charsLeft, $conlength);
									for($j = 0; $j < $len; $j ++) {
										$retstr .= $data [$spos + $j] . chr ( 0 );
									}
									$charsLeft -= $len;
									$asciiEncoding = false;
								} else {
									$newstr = '';
									for($j = 0; $j < strlen ( $retstr ); $j ++) {
										$newstr = $retstr [$j] . chr ( 0 );
									}
									$retstr = $newstr;
									$len = min ( $charsLeft * 2, $limitpos - $spos ); // min($charsLeft, $conlength);
									$retstr .= substr ( $data, $spos, $len );
									$charsLeft -= $len / 2;
									$asciiEncoding = false;
								}
								$spos += $len;
							}
						}
						if ($asciiEncoding)
							$retstr = preg_replace ( "/(.)/s", "$1\0", $retstr );
						$retstr = $this->_encodeUTF16 ( $retstr );
						
						if ($richString) {
							$spos += 4 * $formattingRuns;
						}
						
						// For extended strings, skip over the extended string data
						if ($extendedString) {
							$spos += $extendedRunLength;
						}
						$this->sst [] = $retstr;
					}
					break;
				case SPREADSHEET_EXCEL_READER_TYPE_FILEPASS :
					return false;
					break;
				case SPREADSHEET_EXCEL_READER_TYPE_NAME :
					break;
				case SPREADSHEET_EXCEL_READER_TYPE_FORMAT :
					$indexCode = v ( $data, $pos + 4 );
					if ($version == SPREADSHEET_EXCEL_READER_BIFF8) {
						$numchars = v ( $data, $pos + 6 );
						if (ord ( $data [$pos + 8] ) == 0) {
							$formatString = substr ( $data, $pos + 9, $numchars );
						} else {
							$formatString = substr ( $data, $pos + 9, $numchars * 2 );
						}
					} else {
						$numchars = ord ( $data [$pos + 6] );
						$formatString = substr ( $data, $pos + 7, $numchars * 2 );
					}
					$this->formatRecords [$indexCode] = $formatString;
					break;
				case SPREADSHEET_EXCEL_READER_TYPE_FONT :
					$height = v ( $data, $pos + 4 );
					$option = v ( $data, $pos + 6 );
					$color = v ( $data, $pos + 8 );
					$weight = v ( $data, $pos + 10 );
					$under = ord ( $data [$pos + 14] );
					$font = "";
					// Font name
					$numchars = ord ( $data [$pos + 18] );
					if ((ord ( $data [$pos + 19] ) & 1) == 0) {
						$font = substr ( $data, $pos + 20, $numchars );
					} else {
						$font = substr ( $data, $pos + 20, $numchars * 2 );
						$font = $this->_encodeUTF16 ( $font );
					}
					$this->fontRecords [] = array ('height' => $height / 20, 'italic' => ! ! ($option & 2), 'color' => $color, 'under' => ! ($under == 0), 'bold' => ($weight == 700), 'font' => $font, 'raw' => $this->dumpHexData ( $data, $pos + 3, $length ) );
					break;
				
				case SPREADSHEET_EXCEL_READER_TYPE_PALETTE :
					$colors = ord ( $data [$pos + 4] ) | ord ( $data [$pos + 5] ) << 8;
					for($coli = 0; $coli < $colors; $coli ++) {
						$colOff = $pos + 2 + ($coli * 4);
						$colr = ord ( $data [$colOff] );
						$colg = ord ( $data [$colOff + 1] );
						$colb = ord ( $data [$colOff + 2] );
						$this->colors [0x07 + $coli] = '#' . $this->myhex ( $colr ) . $this->myhex ( $colg ) . $this->myhex ( $colb );
					}
					break;
				
				case SPREADSHEET_EXCEL_READER_TYPE_XF :
					$fontIndexCode = (ord ( $data [$pos + 4] ) | ord ( $data [$pos + 5] ) << 8) - 1;
					$fontIndexCode = max ( 0, $fontIndexCode );
					$indexCode = ord ( $data [$pos + 6] ) | ord ( $data [$pos + 7] ) << 8;
					$alignbit = ord ( $data [$pos + 10] ) & 3;
					$bgi = (ord ( $data [$pos + 22] ) | ord ( $data [$pos + 23] ) << 8) & 0x3FFF;
					$bgcolor = ($bgi & 0x7F);
					//						$bgcolor = ($bgi & 0x3f80) >> 7;
					$align = "";
					if ($alignbit == 3) {
						$align = "right";
					}
					if ($alignbit == 2) {
						$align = "center";
					}
					
					$fillPattern = (ord ( $data [$pos + 21] ) & 0xFC) >> 2;
					if ($fillPattern == 0) {
						$bgcolor = "";
					}
					
					$xf = array ();
					$xf ['formatIndex'] = $indexCode;
					$xf ['align'] = $align;
					$xf ['fontIndex'] = $fontIndexCode;
					$xf ['bgColor'] = $bgcolor;
					$xf ['fillPattern'] = $fillPattern;
					
					$border = ord ( $data [$pos + 14] ) | (ord ( $data [$pos + 15] ) << 8) | (ord ( $data [$pos + 16] ) << 16) | (ord ( $data [$pos + 17] ) << 24);
					
					
					$xf ['borderLeftColor'] = ($border & 0x7F0000) >> 16;
					$xf ['borderRightColor'] = ($border & 0x3F800000) >> 23;
					$border = (ord ( $data [$pos + 18] ) | ord ( $data [$pos + 19] ) << 8);
					
					$xf ['borderTopColor'] = ($border & 0x7F);
					$xf ['borderBottomColor'] = ($border & 0x3F80) >> 7;
					
					if (array_key_exists ( $indexCode, $this->dateFormats )) {
						$xf ['type'] = 'date';
						$xf ['format'] = $this->dateFormats [$indexCode];
						if ($align == '') {
							$xf ['align'] = 'right';
						}
					} elseif (array_key_exists ( $indexCode, $this->numberFormats )) {
						$xf ['type'] = 'number';
						$xf ['format'] = $this->numberFormats [$indexCode];
						if ($align == '') {
							$xf ['align'] = 'right';
						}
					} else {
						$isdate = FALSE;
						$formatstr = '';
						if ($indexCode > 0) {
							if (isset ( $this->formatRecords [$indexCode] ))
								$formatstr = $this->formatRecords [$indexCode];
							if ($formatstr != "") {
								$tmp = preg_replace ( "/\;.*/", "", $formatstr );
								$tmp = preg_replace ( "/^\[[^\]]*\]/", "", $tmp );
								if (preg_match ( "/[^hmsday\/\-:\s\\\,AMP]/i", $tmp ) == 0) { // found day and time format
									$isdate = TRUE;
									$formatstr = $tmp;
									$formatstr = str_replace ( array ('AM/PM', 'mmmm', 'mmm' ), array ('a', 'F', 'M' ), $formatstr );
									// m/mm are used for both minutes and months - oh SNAP!
									// This mess tries to fix for that.
									// 'm' == minutes only if following h/hh or preceding s/ss
									$formatstr = preg_replace ( "/(h:?)mm?/", "$1i", $formatstr );
									$formatstr = preg_replace ( "/mm?(:?s)/", "i$1", $formatstr );
									// A single 'm' = n in PHP
									$formatstr = preg_replace ( "/(^|[^m])m([^m]|$)/", '$1n$2', $formatstr );
									$formatstr = preg_replace ( "/(^|[^m])m([^m]|$)/", '$1n$2', $formatstr );
									// else it's months
									$formatstr = str_replace ( 'mm', 'm', $formatstr );
									// Convert single 'd' to 'j'
									$formatstr = preg_replace ( "/(^|[^d])d([^d]|$)/", '$1j$2', $formatstr );
									$formatstr = str_replace ( array ('dddd', 'ddd', 'dd', 'yyyy', 'yy', 'hh', 'h' ), array ('l', 'D', 'd', 'Y', 'y', 'H', 'g' ), $formatstr );
									$formatstr = preg_replace ( "/ss?/", 's', $formatstr );
								}
							}
						}
						if ($isdate) {
							$xf ['type'] = 'date';
							$xf ['format'] = $formatstr;
							if ($align == '') {
								$xf ['align'] = 'right';
							}
						} else {
							// If the format string has a 0 or # in it, we'll assume it's a number
							if (preg_match ( "/[0#]/", $formatstr )) {
								$xf ['type'] = 'number';
								if ($align == '') {
									$xf ['align'] = 'right';
								}
							} else {
								$xf ['type'] = 'other';
							}
							$xf ['format'] = $formatstr;
							$xf ['code'] = $indexCode;
						}
					}
					$this->xfRecords [] = $xf;
					break;
				case SPREADSHEET_EXCEL_READER_TYPE_NINETEENFOUR :
					$this->nineteenFour = (ord ( $data [$pos + 4] ) == 1);
					break;
				case SPREADSHEET_EXCEL_READER_TYPE_BOUNDSHEET :
					$rec_offset = $this->_GetInt4d ( $data, $pos + 4 );
					$rec_typeFlag = ord ( $data [$pos + 8] );
					$rec_visibilityFlag = ord ( $data [$pos + 9] );
					$rec_length = ord ( $data [$pos + 10] );
					
					if ($version == SPREADSHEET_EXCEL_READER_BIFF8) {
						$chartype = ord ( $data [$pos + 11] );
						if ($chartype == 0) {
							$rec_name = substr ( $data, $pos + 12, $rec_length );
						} else {
							$rec_name = $this->_encodeUTF16 ( substr ( $data, $pos + 12, $rec_length * 2 ) );
						}
					} elseif ($version == SPREADSHEET_EXCEL_READER_BIFF7) {
						$rec_name = substr ( $data, $pos + 11, $rec_length );
					}
					$this->boundsheets [] = array ('name' => $rec_name, 'offset' => $rec_offset );
					break;
			
			}
			
			$pos += $length + 4;
			$code = ord ( $data [$pos] ) | ord ( $data [$pos + 1] ) << 8;
			$length = ord ( $data [$pos + 2] ) | ord ( $data [$pos + 3] ) << 8;
		}
		
		foreach ( $this->boundsheets as $key => $val ) {
			$this->sn = $key;
			$this->_parsesheet ( $val ['offset'] );
		}
		return true;
	}

	/**
	 * Parse a worksheet
	 */
	function _parsesheet($spos) {
		$cont = true;
		$data = $this->data;
		// read BOF
		$code = ord ( $data [$spos] ) | ord ( $data [$spos + 1] ) << 8;
		$length = ord ( $data [$spos + 2] ) | ord ( $data [$spos + 3] ) << 8;
		
		$version = ord ( $data [$spos + 4] ) | ord ( $data [$spos + 5] ) << 8;
		$substreamType = ord ( $data [$spos + 6] ) | ord ( $data [$spos + 7] ) << 8;
		
		if (($version != SPREADSHEET_EXCEL_READER_BIFF8) && ($version != SPREADSHEET_EXCEL_READER_BIFF7)) {
			return - 1;
		}
		
		if ($substreamType != SPREADSHEET_EXCEL_READER_WORKSHEET) {
			return - 2;
		}
		$spos += $length + 4;
		while ( $cont ) {
			$lowcode = ord ( $data [$spos] );
			if ($lowcode == SPREADSHEET_EXCEL_READER_TYPE_EOF)
				break;
			$code = $lowcode | ord ( $data [$spos + 1] ) << 8;
			$length = ord ( $data [$spos + 2] ) | ord ( $data [$spos + 3] ) << 8;
			$spos += 4;
			$this->sheets [$this->sn] ['maxrow'] = $this->_rowoffset - 1;
			$this->sheets [$this->sn] ['maxcol'] = $this->_coloffset - 1;
			unset ( $this->rectype );
			switch ($code) {
				case SPREADSHEET_EXCEL_READER_TYPE_DIMENSION :
					if (! isset ( $this->numRows )) {
						if (($length == 10) || ($version == SPREADSHEET_EXCEL_READER_BIFF7)) {
							$this->sheets [$this->sn] ['numRows'] = ord ( $data [$spos + 2] ) | ord ( $data [$spos + 3] ) << 8;
							$this->sheets [$this->sn] ['numCols'] = ord ( $data [$spos + 6] ) | ord ( $data [$spos + 7] ) << 8;
						} else {
							$this->sheets [$this->sn] ['numRows'] = ord ( $data [$spos + 4] ) | ord ( $data [$spos + 5] ) << 8;
							$this->sheets [$this->sn] ['numCols'] = ord ( $data [$spos + 10] ) | ord ( $data [$spos + 11] ) << 8;
						}
					}
					break;
				case SPREADSHEET_EXCEL_READER_TYPE_MERGEDCELLS :
					$cellRanges = ord ( $data [$spos] ) | ord ( $data [$spos + 1] ) << 8;
					for($i = 0; $i < $cellRanges; $i ++) {
						$fr = ord ( $data [$spos + 8 * $i + 2] ) | ord ( $data [$spos + 8 * $i + 3] ) << 8;
						$lr = ord ( $data [$spos + 8 * $i + 4] ) | ord ( $data [$spos + 8 * $i + 5] ) << 8;
						$fc = ord ( $data [$spos + 8 * $i + 6] ) | ord ( $data [$spos + 8 * $i + 7] ) << 8;
						$lc = ord ( $data [$spos + 8 * $i + 8] ) | ord ( $data [$spos + 8 * $i + 9] ) << 8;
						if ($lr - $fr > 0) {
							$this->sheets [$this->sn] ['cellsInfo'] [$fr + 1] [$fc + 1] ['rowspan'] = $lr - $fr + 1;
						}
						if ($lc - $fc > 0) {
							$this->sheets [$this->sn] ['cellsInfo'] [$fr + 1] [$fc + 1] ['colspan'] = $lc - $fc + 1;
						}
					}
					break;
				case SPREADSHEET_EXCEL_READER_TYPE_RK :
				case SPREADSHEET_EXCEL_READER_TYPE_RK2 :
					$row = ord ( $data [$spos] ) | ord ( $data [$spos + 1] ) << 8;
					$column = ord ( $data [$spos + 2] ) | ord ( $data [$spos + 3] ) << 8;
					$rknum = $this->_GetInt4d ( $data, $spos + 6 );
					$numValue = $this->_GetIEEE754 ( $rknum );
					$info = $this->_getCellDetails ( $spos, $numValue, $column );
					$this->addcell ( $row, $column, $info ['string'], $info );
					break;
				case SPREADSHEET_EXCEL_READER_TYPE_LABELSST :
					$row = ord ( $data [$spos] ) | ord ( $data [$spos + 1] ) << 8;
					$column = ord ( $data [$spos + 2] ) | ord ( $data [$spos + 3] ) << 8;
					$xfindex = ord ( $data [$spos + 4] ) | ord ( $data [$spos + 5] ) << 8;
					$index = $this->_GetInt4d ( $data, $spos + 6 );
					$this->addcell ( $row, $column, $this->sst [$index], array ('xfIndex' => $xfindex ) );
					break;
				case SPREADSHEET_EXCEL_READER_TYPE_MULRK :
					$row = ord ( $data [$spos] ) | ord ( $data [$spos + 1] ) << 8;
					$colFirst = ord ( $data [$spos + 2] ) | ord ( $data [$spos + 3] ) << 8;
					$colLast = ord ( $data [$spos + $length - 2] ) | ord ( $data [$spos + $length - 1] ) << 8;
					$columns = $colLast - $colFirst + 1;
					$tmppos = $spos + 4;
					for($i = 0; $i < $columns; $i ++) {
						$numValue = $this->_GetIEEE754 ( $this->_GetInt4d ( $data, $tmppos + 2 ) );
						$info = $this->_getCellDetails ( $tmppos - 4, $numValue, $colFirst + $i + 1 );
						$tmppos += 6;
						$this->addcell ( $row, $colFirst + $i, $info ['string'], $info );
					}
					break;
				case SPREADSHEET_EXCEL_READER_TYPE_NUMBER :
					$row = ord ( $data [$spos] ) | ord ( $data [$spos + 1] ) << 8;
					$column = ord ( $data [$spos + 2] ) | ord ( $data [$spos + 3] ) << 8;
					$tmp = unpack ( "ddouble", substr ( $data, $spos + 6, 8 ) ); // It machine machine dependent
					if ($this->isDate ( $spos )) {
						$numValue = $tmp ['double'];
					} else {
						$numValue = $this->createNumber ( $spos );
					}
					$info = $this->_getCellDetails ( $spos, $numValue, $column );
					$this->addcell ( $row, $column, $info ['string'], $info );
					break;
				
				case SPREADSHEET_EXCEL_READER_TYPE_FORMULA :
				case SPREADSHEET_EXCEL_READER_TYPE_FORMULA2 :
					$row = ord ( $data [$spos] ) | ord ( $data [$spos + 1] ) << 8;
					$column = ord ( $data [$spos + 2] ) | ord ( $data [$spos + 3] ) << 8;
					if ((ord ( $data [$spos + 6] ) == 0) && (ord ( $data [$spos + 12] ) == 255) && (ord ( $data [$spos + 13] ) == 255)) {
						//String formula. Result follows in a STRING record
						// This row/col are stored to be referenced in that record
						// http://code.google.com/p/php-excel-reader/issues/detail?id=4
						$previousRow = $row;
						$previousCol = $column;
					} elseif ((ord ( $data [$spos + 6] ) == 1) && (ord ( $data [$spos + 12] ) == 255) && (ord ( $data [$spos + 13] ) == 255)) {
						//Boolean formula. Result is in +2; 0=false,1=true
						// http://code.google.com/p/php-excel-reader/issues/detail?id=4
						if (ord ( $this->data [$spos + 8] ) == 1) {
							$this->addcell ( $row, $column, "TRUE" );
						} else {
							$this->addcell ( $row, $column, "FALSE" );
						}
					} elseif ((ord ( $data [$spos + 6] ) == 2) && (ord ( $data [$spos + 12] ) == 255) && (ord ( $data [$spos + 13] ) == 255)) {
						//Error formula. Error code is in +2;
					} elseif ((ord ( $data [$spos + 6] ) == 3) && (ord ( $data [$spos + 12] ) == 255) && (ord ( $data [$spos + 13] ) == 255)) {
						//Formula result is a null string.
						$this->addcell ( $row, $column, '' );
					} else {
						// result is a number, so first 14 bytes are just like a _NUMBER record
						$tmp = unpack ( "ddouble", substr ( $data, $spos + 6, 8 ) ); // It machine machine dependent
						if ($this->isDate ( $spos )) {
							$numValue = $tmp ['double'];
						} else {
							$numValue = $this->createNumber ( $spos );
						}
						$info = $this->_getCellDetails ( $spos, $numValue, $column );
						$this->addcell ( $row, $column, $info ['string'], $info );
					}
					break;
				case SPREADSHEET_EXCEL_READER_TYPE_BOOLERR :
					$row = ord ( $data [$spos] ) | ord ( $data [$spos + 1] ) << 8;
					$column = ord ( $data [$spos + 2] ) | ord ( $data [$spos + 3] ) << 8;
					$string = ord ( $data [$spos + 6] );
					$this->addcell ( $row, $column, $string );
					break;
				case SPREADSHEET_EXCEL_READER_TYPE_STRING :
					// http://code.google.com/p/php-excel-reader/issues/detail?id=4
					if ($version == SPREADSHEET_EXCEL_READER_BIFF8) {
						// Unicode 16 string, like an SST record
						$xpos = $spos;
						$numChars = ord ( $data [$xpos] ) | (ord ( $data [$xpos + 1] ) << 8);
						$xpos += 2;
						$optionFlags = ord ( $data [$xpos] );
						$xpos ++;
						$asciiEncoding = (($optionFlags & 0x01) == 0);
						$extendedString = (($optionFlags & 0x04) != 0);
						// See if string contains formatting information
						$richString = (($optionFlags & 0x08) != 0);
						if ($richString) {
							// Read in the crun
							$formattingRuns = ord ( $data [$xpos] ) | (ord ( $data [$xpos + 1] ) << 8);
							$xpos += 2;
						}
						if ($extendedString) {
							// Read in cchExtRst
							$extendedRunLength = $this->_GetInt4d ( $this->data, $xpos );
							$xpos += 4;
						}
						$len = ($asciiEncoding) ? $numChars : $numChars * 2;
						$retstr = substr ( $data, $xpos, $len );
						$xpos += $len;
						if ($asciiEncoding)
							$retstr = preg_replace ( "/(.)/s", "$1\0", $retstr );
						$retstr = $this->_encodeUTF16 ( $retstr );
					} elseif ($version == SPREADSHEET_EXCEL_READER_BIFF7) {
						// Simple byte string
						$xpos = $spos;
						$numChars = ord ( $data [$xpos] ) | (ord ( $data [$xpos + 1] ) << 8);
						$xpos += 2;
						$retstr = substr ( $data, $xpos, $numChars );
					}
					$this->addcell ( $previousRow, $previousCol, $retstr );
					break;
				case SPREADSHEET_EXCEL_READER_TYPE_ROW :
					$row = ord ( $data [$spos] ) | ord ( $data [$spos + 1] ) << 8;
					$rowInfo = ord ( $data [$spos + 6] ) | ((ord ( $data [$spos + 7] ) << 8) & 0x7FFF);
					if (($rowInfo & 0x8000) > 0) {
						$rowHeight = - 1;
					} else {
						$rowHeight = $rowInfo & 0x7FFF;
					}
					$rowHidden = (ord ( $data [$spos + 12] ) & 0x20) >> 5;
					$this->rowInfo [$this->sn] [$row + 1] = Array ('height' => $rowHeight / 20, 'hidden' => $rowHidden );
					break;
				case SPREADSHEET_EXCEL_READER_TYPE_DBCELL :
					break;
				case SPREADSHEET_EXCEL_READER_TYPE_MULBLANK :
					$row = ord ( $data [$spos] ) | ord ( $data [$spos + 1] ) << 8;
					$column = ord ( $data [$spos + 2] ) | ord ( $data [$spos + 3] ) << 8;
					$cols = ($length / 2) - 3;
					for($c = 0; $c < $cols; $c ++) {
						$xfindex = ord ( $data [$spos + 4 + ($c * 2)] ) | ord ( $data [$spos + 5 + ($c * 2)] ) << 8;
						$this->addcell ( $row, $column + $c, "", array ('xfIndex' => $xfindex ) );
					}
					break;
				case SPREADSHEET_EXCEL_READER_TYPE_LABEL :
					$row = ord ( $data [$spos] ) | ord ( $data [$spos + 1] ) << 8;
					$column = ord ( $data [$spos + 2] ) | ord ( $data [$spos + 3] ) << 8;
					$this->addcell ( $row, $column, substr ( $data, $spos + 8, ord ( $data [$spos + 6] ) | ord ( $data [$spos + 7] ) << 8 ) );
					break;
				case SPREADSHEET_EXCEL_READER_TYPE_EOF :
					$cont = false;
					break;
				case SPREADSHEET_EXCEL_READER_TYPE_HYPER :
					//  Only handle hyperlinks to a URL
					$row = ord ( $this->data [$spos] ) | ord ( $this->data [$spos + 1] ) << 8;
					$row2 = ord ( $this->data [$spos + 2] ) | ord ( $this->data [$spos + 3] ) << 8;
					$column = ord ( $this->data [$spos + 4] ) | ord ( $this->data [$spos + 5] ) << 8;
					$column2 = ord ( $this->data [$spos + 6] ) | ord ( $this->data [$spos + 7] ) << 8;
					$linkdata = Array ();
					$flags = ord ( $this->data [$spos + 28] );
					$udesc = "";
					$ulink = "";
					$uloc = 32;
					$linkdata ['flags'] = $flags;
					if (($flags & 1) > 0) { // is a type we understand
						//  is there a description ?
						if (($flags & 0x14) == 0x14) { // has a description
							$uloc += 4;
							$descLen = ord ( $this->data [$spos + 32] ) | ord ( $this->data [$spos + 33] ) << 8;
							$udesc = substr ( $this->data, $spos + $uloc, $descLen * 2 );
							$uloc += 2 * $descLen;
						}
						$ulink = $this->read16bitstring ( $this->data, $spos + $uloc + 20 );
						if ($udesc == "") {
							$udesc = $ulink;
						}
					}
					$linkdata ['desc'] = $udesc;
					$linkdata ['link'] = $this->_encodeUTF16 ( $ulink );
					for($r = $row; $r <= $row2; $r ++) {
						for($c = $column; $c <= $column2; $c ++) {
							$this->sheets [$this->sn] ['cellsInfo'] [$r + 1] [$c + 1] ['hyperlink'] = $linkdata;
						}
					}
					break;
				case SPREADSHEET_EXCEL_READER_TYPE_DEFCOLWIDTH :
					$this->defaultColWidth = ord ( $data [$spos + 4] ) | ord ( $data [$spos + 5] ) << 8;
					break;
				case SPREADSHEET_EXCEL_READER_TYPE_STANDARDWIDTH :
					$this->standardColWidth = ord ( $data [$spos + 4] ) | ord ( $data [$spos + 5] ) << 8;
					break;
				case SPREADSHEET_EXCEL_READER_TYPE_COLINFO :
					$colfrom = ord ( $data [$spos + 0] ) | ord ( $data [$spos + 1] ) << 8;
					$colto = ord ( $data [$spos + 2] ) | ord ( $data [$spos + 3] ) << 8;
					$cw = ord ( $data [$spos + 4] ) | ord ( $data [$spos + 5] ) << 8;
					$cxf = ord ( $data [$spos + 6] ) | ord ( $data [$spos + 7] ) << 8;
					$co = ord ( $data [$spos + 8] );
					for($coli = $colfrom; $coli <= $colto; $coli ++) {
						$this->colInfo [$this->sn] [$coli + 1] = Array ('width' => $cw, 'xf' => $cxf, 'hidden' => ($co & 0x01), 'collapsed' => ($co & 0x1000) >> 12 );
					}
					break;
				
				default :
					break;
			}
			$spos += $length;
		}
		
		if (! isset ( $this->sheets [$this->sn] ['numRows'] ))
			$this->sheets [$this->sn] ['numRows'] = $this->sheets [$this->sn] ['maxrow'];
		if (! isset ( $this->sheets [$this->sn] ['numCols'] ))
			$this->sheets [$this->sn] ['numCols'] = $this->sheets [$this->sn] ['maxcol'];
	}

	function isDate($spos) {
		$xfindex = ord($this->data[$spos+4]) | ord($this->data[$spos+5]) << 8;
		return ($this->xfRecords[$xfindex]['type'] == 'date');
	}

	// Get the details for a particular cell
	function _getCellDetails($spos,$numValue,$column) {
		$xfindex = ord($this->data[$spos+4]) | ord($this->data[$spos+5]) << 8;
		$xfrecord = $this->xfRecords[$xfindex];
		$type = $xfrecord['type'];

		$format = $xfrecord['format'];
		//$formatIndex = $xfrecord['formatIndex'];
		$rectype = '';
		$string = '';
		$raw = '';

		if (isset($this->_columnsFormat[$column + 1])){
			$format = $this->_columnsFormat[$column + 1];
		}

		if ($type == 'date') {
			// See http://groups.google.com/group/php-excel-reader-discuss/browse_frm/thread/9c3f9790d12d8e10/f2045c2369ac79de
			$rectype = 'date';
			// Convert numeric value into a date
			$utcDays = floor($numValue - ($this->nineteenFour ? SPREADSHEET_EXCEL_READER_UTCOFFSETDAYS1904 : SPREADSHEET_EXCEL_READER_UTCOFFSETDAYS));
			$utcValue = ($utcDays) * SPREADSHEET_EXCEL_READER_MSINADAY;
			$dateinfo = gmgetdate($utcValue);
			$raw = $numValue;
			$fractionalDay = $numValue - floor($numValue) + .0000001; // The .0000001 is to fix for php/excel fractional diffs

			$totalseconds = floor(SPREADSHEET_EXCEL_READER_MSINADAY * $fractionalDay);
			$secs = $totalseconds % 60;
			$totalseconds -= $secs;
			$hours = floor($totalseconds / (60 * 60));
			$mins = floor($totalseconds / 60) % 60;
			$string = date ($format, mktime(0,0,0,$dateinfo["mon"], $dateinfo["mday"], $dateinfo["year"]));
		} else if ($type == 'number') {
			$rectype = 'number';
			//$formatted = $this->_format_value($format, $numValue, $formatIndex);
			$formatted = $this->_format_value($format, $numValue);

			$string = $formatted['string'];
			$formatColor = $formatted['formatColor'];
			$raw = $numValue;
		} else{
			if ($format=="") {
				$format = $this->_defaultFormat;
			}
			$rectype = 'unknown';
			//, $formatIndex
			$formatted = $this->_format_value($format, $numValue);
			$string = $formatted['string'];
			$raw = $numValue;
		}

		return array(
				'string'=>$string,
				'raw'=>$raw,
				'rectype'=>$rectype,
				'format'=>$format,
		//'formatIndex'=>$formatIndex,
				'xfIndex'=>$xfindex
		);

	}

	function createNumber($spos) {
		$rknumhigh = $this->_GetInt4d($this->data, $spos + 10);
		$rknumlow = $this->_GetInt4d($this->data, $spos + 6);
		$sign = ($rknumhigh & 0x80000000) >> 31;
		$exp =  ($rknumhigh & 0x7ff00000) >> 20;
		$mantissa = (0x100000 | ($rknumhigh & 0x000fffff));
		$mantissalow1 = ($rknumlow & 0x80000000) >> 31;
		$mantissalow2 = ($rknumlow & 0x7fffffff);
		$value = $mantissa / pow( 2 , (20- ($exp - 1023)));
		if ($mantissalow1 != 0) $value += 1 / pow (2 , (21 - ($exp - 1023)));
		$value += $mantissalow2 / pow (2 , (52 - ($exp - 1023)));
		if ($sign) {$value = -1 * $value;}
		return  $value;
	}

	function addcell($row, $col, $string, $info=null) {
		$this->sheets[$this->sn]['maxrow'] = max($this->sheets[$this->sn]['maxrow'], $row + $this->_rowoffset);
		$this->sheets[$this->sn]['maxcol'] = max($this->sheets[$this->sn]['maxcol'], $col + $this->_coloffset);
		$this->sheets[$this->sn]['cells'][$row + $this->_rowoffset][$col + $this->_coloffset] = $string;
		if ($this->store_extended_info && $info) {
			foreach ($info as $key=>$val) {
				$this->sheets[$this->sn]['cellsInfo'][$row + $this->_rowoffset][$col + $this->_coloffset][$key] = $val;
			}
		}
	}

	function _GetIEEE754($rknum) {
		if (($rknum & 0x02) != 0) {
			$value = $rknum >> 2;
		} else {
			//mmp
			// I got my info on IEEE754 encoding from
			// http://research.microsoft.com/~hollasch/cgindex/coding/ieeefloat.html
			// The RK format calls for using only the most significant 30 bits of the
			// 64 bit floating point value. The other 34 bits are assumed to be 0
			// So, we use the upper 30 bits of $rknum as follows...
			$sign = ($rknum & 0x80000000) >> 31;
			$exp = ($rknum & 0x7ff00000) >> 20;
			$mantissa = (0x100000 | ($rknum & 0x000ffffc));
			$value = $mantissa / pow( 2 , (20- ($exp - 1023)));
			if ($sign) {
				$value = -1 * $value;
			}
			//end of changes by mmp
		}
		if (($rknum & 0x01) != 0) {
			$value /= 100;
		}
		return $value;
	}

	function _encodeUTF16($string) {
		$result = $string;
		if ($this->_defaultEncoding){
			switch ($this->_encoderFunction){
				case 'iconv' :	 $result = iconv('UTF-16LE', $this->_defaultEncoding, $string);
				break;
				case 'mb_convert_encoding' :	 $result = mb_convert_encoding($string, $this->_defaultEncoding, 'UTF-16LE' );
				break;
			}
		}
		return $result;
	}

	function _GetInt4d($data, $pos) {
		$value = ord($data[$pos]) | (ord($data[$pos+1]) << 8) | (ord($data[$pos+2]) << 16) | (ord($data[$pos+3]) << 24);
		if ($value>=4294967294) {
			$value=-2;
		}
		return $value;
	}

}
?>